'Sister' in the Bible

Now a certain man named Lazarus was sick. He was from Bethany, the village where Mary and her sister Martha lived.

(Now Jesus loved Martha and her sister and Lazarus.)

And when she had said this, Martha went and called her sister Mary, saying privately, "The Teacher is here and is asking for you."

Jesus said, "Take away the stone." Martha, the sister of the deceased, replied, "Lord, by this time the body will have a bad smell, because he has been buried four days."

Now standing beside Jesus' cross were his mother, his mother's sister, Mary the wife of Clopas, and Mary Magdalene.